Sulfur-burner.



H. C. Es.US.

SULFUR BURNER. APPLICATION FILED AUG. 19. 1915 nnnrnn sTiarns PATENTonnron.

HUBERT 0. amis, oie cmcaco, ELINOIS, assmioa T0 ELLIS mime. & ELEVATOZ.conmnr, or cmcaoo, ILLNOIS, A coaronaazon on w1sconsm.

SULFUE-BURNER.

Specflcacion of Letters Patent.

Patented 851. 1918.

Application filed Angust 19, 1915. Serial Io. 46,382.

ing of a bleaching re-agent such as snlfur,

for use in grain blcachers. Heretofore, difiiculty has been experiencedin the maintenance cf snlfur bnrners, due to the extraor dinarytemperatnres therein. In these furnaces.it is particnlarly desirablc toavoid any leakage of the fumes into the room in which the fnrnace islocated. The invention is designed to provide a snltur burner Which isdrable and which can be prodnccd at a low cost and which is built sothat the wails thereof will remain intact despite the high tcmpcraturcscanscd by tlie bnrning reagent.

The invention consiste in the several novel features limreinafter setforth and more partienlarly dcfined by claim at the conclusion hereof'.

In the drawings: Figure 1 is a vertical longitudinal section of a snlfnrbnrner embod vin,q the invention. Fig. 2 is a horizontal section takenon line 2-2 of Fig. 1. Fig. 3 is a vertical section taken on the hne 3 3of Fig. 1.

The improved tnrnaco comprises a bed or base 10 rormcd of concrete andhaving slntable mctallic roinlorcemcnt 11 therein. Therombnstion-chamber 12 for the snltnr is in an inner structure bnilt offire-brick and comprisinf a tic-or 14. a back wall 15, a front wall M5,a mot 17 and side walis 18. A honzontal baffle 19 entends backwardlyfrom the front wall 16 and its rear end terminates somc distance fromthe back wall 15 to leave a space for the passage ofthe sulfur fumes tothe space above the bafiie. The firebnck forming the baffle aresupported by mverted T-bars spported in the side walls. 'The mot 17 isalso sustained or onilt upon T- bars 21. A slocvo 22 forming the outletfor the fumes is lonilt centraliy in the top wall 1? to conduct thcfumes to a pipe 22 lcading to lhe hioachor. vVall 16 is formcd With anopening 23 through which the sulfur may be placed onto the floor 14 andto admit air i for combustion.

The furnace also comprises an outer structure supported upon bed 10, andseparaced from the inner structure containing the com bustion chamber,at the sides, back, front and top, so as to form an insulating spacearound the inner structure and so that the latter Will be free to expandand contract responsively to the variation in temperature W1th0utdistorting the outer structure.

in practice it has been found that by provichng these disconnected orseparated structures with an air space between them the.

furnace Will be durable and danger of crackavoided.

. The enter Structure comprises a front wall 24, a baclmvall 25,side-walls 26, all formed of common brick, and a top wall 27 fdrmed cfconcrete. The-top-wall is formed et concrete with suitable metallicreinforcement 28 therein. The front wall 16 of the inner structure isextended aronnd opening 23, as at 29, into the front wall 24 of theouter structure. pening 23 extends throngh front wall 24 of the outerstrnbtnre for the admission of air. A door-frame 30 is fixed in thefront wall 24 and a door 31 is hinged thereto, so that when the door isopened, sulfnr may be readily shovelcd onto the floor of thecombustion-chamber. A rotatable register vah e 32 is provided on' thedoor 31 to admit air to the combnstion-chamber in volume necessary forcombustion. A

Sleeve 22 is slidablc in the opening 33 in the top Wall 27 to form anexpansion joint botween the fumes-conduit and the Wall 27. Pipe 22 leadsfrom opening 33 to th bleacher and a packng 34: of asbestos isinterpbsed between said pipe and the Wall 27 to prevent the escape offumes at' the oint. The ends of sleeve 22 and pipe 22 are spacd apart toleave room for the sliding of the sleeve responsiv. to temperatureVariations.

In pratice, it has been found thzit when inq and distortion 015 thewalls will bel tiorods 35 anchored to the reinforcement 11 in bho bed 10are also anchorod to the reinf.r;r remont 28 in the top Wal1 27, asshown in 1'. These tie-rods are disposed at and. adjacent eaoh corner ofthe onter structure. In operation, tho snlfur placed on the floor 14 oftna combustion ohamber when ignitod Will produce fumes which Wii] riseto or near the bafiie, pass aronnd tire rear end thereo and thencebetwoen tire bafiio and the moi 17 to the ouslet 22. Since the 001d airontors at the register valve 32, and the fumes pass baokwardiy awa} fromthe front waiL Lhe extension 29 of the inner structure wiii nofi hoheatod snficien-iy t0 cause any snb sn'tiai degree of expansion orcontraction. innt this connection betwoen (ho front U w:zi. of the innerand onter structures i\'iN no have any mnionoy t0 d1stort the front wai;of the ontor structure. t wi]i bo 01% sorved that ail the wa1ls of theinnor strng 1!P, SX bjectod o oxtromes oi' haut are froc to axpand andcontract responsiv(iy to tho variations in t *m] eratnro in thocombustion hamber withont oxerting any distorting upon im onterst11otnrv. Ai tho mnvs--cmiot tim expansion joint betwoon zho si0m'o andtho top mali 2.7 permins expan sion and oon'traction of the roof 01 (hainnnr .si;rnonra ithoii; oKertin;r any disiorting stresses upon th(%top-wall of tho ontor structure. 'iho spacc formed botwoon iho innor andonter structures serves as an efficient in sniation;to provent ho heatin the combustion-chambor irmn passing throngh tho ou-ter structure intothu room in which the furnace is iocated.

'i-"ho invention thns exon1piifies an i1n provnd snlfnr bnrner which(0H1 .;rises inner and onter structures, With an insuiating spacuihorohohvoon, the inner structure containingz the combustion-chamber,and having its Wails free to oxpand and oontraot without exerting anydistorting str 5535 on the onter structure. Provision is made forrigidiy securing and anchorin;- the conorete top o the enter structure othe concrets bed to preront sagging of the said top" The urnaoe in itsontiret is simple in construction, eiicient in operation and can beprodnced at a ow cost.

The invention is not 1'30 be nnderstood resrioted *ao fiae dot iis setforth, sinco theso ma v ho nmdifiod n'iv in the soope of the appendeddaim, wiivhont (iepa1ting from the spirit and soopo of the invention.

Hai'ing thns desoriiw n1jv invention, Wha-t: daim as new, and d0sire tosocnro byLet- 1ers Patent, is

In a snifur burner, the combination of a reiniorced concreto oed, aninnor structure i nilt of firo brick and on tho bed., havin;; acon1bnstimx chayiber wih a dosud fioor therein and compr1singSurronnding wais and a roo*r of fire-brick, an outer siructnro bniit ofbrick and on the bod and having waHy aronnd and over the ro0f of iheinner strnm ure, the top waH 03" ho enter structure, heing iornwd ofreinioroad conorote, tio-rods anohorod in. the oed and in said top Wall,tho innor and oncer structures being spaced zmart o forni an insna in};spaoe 'norebetwcon and bein sr disconneotod io oavo the inner structure"me to expand Withont o:mrt in;r disto3ing stresses on the onter sirnotnre, and an iniot and an ontiot for the inner strnctnro.

rv'itnessest M1LDRED STUMPF, ATHARINE GERLACH

